Yesterday's entry - mature content or not?

After I'd published yesterday's entry I got in a reflective mood. Is the picture of the painting I published and the explanation underneath to be considered as mature content or not.
Basically, the nude lady is just a nude lady, not engaged in any activity.
In some countries similar paintings would be considered pornographic, in other's they can be found in main stream galleries.

Often I find looking at a painting is like reading a book: sometimes you have to read between the lines or when observing a painting, look at the details, interaction between characters. You might be surprised what you find out about the artist.